Maybe it’s not a mineral because it’s just hardened tree resin whereas minerals can be mined and found deep in the earth…?
Answer and Explanation:
Multiple organisms especially those that live on land require a rigid framework to support their bodies off the ground and to maintain their shape. Skeletons also offer protection to delicate internal organs for example the skull protects the brain
Your answer is A because B and C don't make sense and D is wrong
Aerobic is oxygen so it would be d
